Answer:
I wrote this answer to get points lol
Explanation:
What was the name of JJ. Thomson's experiment?
Answer:
plum pudding model is the name of JJ. Thomson's experiment
explanation
Summary. J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."
Answer:
J.J Thompson's experiment is
plum pudding model.
How many kPa are in 2,150 mmHg?
2.83 kPa
287 kPa
1.61 ´ 104 kPa
2.18 ´ 105 kPa
Answer:
2150 mmHg ( 1 atm / 760 mmHg ) ( 101.325 kPa / 1 atm ) = 286.643 kPa
Therefore, the closest value from the choices is the second one which has the value of 287, this would be answer.
Explanation:
I stole diss from someone else so Im juss hopin iss right
Answer:
B on EDG
Explanation:
Which of the following families from the periodic table are also groups? Select all that apply.
A.alkaline earth metals
B.transition metals
C.noble gases
D.lanthanides
E.halogens
Spiral galaxies have a central core from which curved arms spiral outward. True False
Answer:
True
Explanation:
In a spiral galaxy, stars had and dust is collected in spiral arms that spread outward from the center of the galaxy. This type of galaxies is composed of young and old stars; being the older ones usually found in the nucleus. Therefore, this statement is True. I
Answer:
true
Explanation:
How do you think the myths of earthquakes swallowing up people came about? Is there a
geological phenomenon that does "swallow up people?
Answer:
when earthquakes are ready strong the ground almost liquefies. There was a pirate trading post on an island and they experienced an earthquake so strong entire buildings were 'swallowed' by sand.
Explanation:
I read a book about it awhile back sorry I couldn't recall the exact location of the island(I think it was in the Caribbean but I'm not sure)
Each O-H bond in a water molecule is highly ___1___. Oxygen acquires a partial ___2___ charge while hydrogen acquires a partial ___3___ charge. Because the H-O-H bond angle is 105 degrees, the water molecule as a whole is ___4___. Water molecules are attracted to each other by intermolecular ___5___ bonds. This bonding accounts for many properties of water, such as its___6___ vapor pressure and ___7___ boiling point. Hydrogen bonding is also responsible for the high ___8___ tension of water. Liquids tend to minimize their surface area and form ___9___ droplets because of their surface tension. The surface tension of water can be reduced by adding a ___10___. ___11___ floats in liquid water. This is because it is less ___12___ than water. Ice has a rigid, open structure, which is also due to ___13___.
Answer: 1(polar), 2(Negative), 3(positive),4(polar), 5(hydrogen), 6(low), 7(high), 8(surface), 9(shperical), 10(surfactant), 11(Ice), 12(dense), 13(hydrogen bonding).
Explanation:
The summary of the question is about water molecules and it's properties. It is made up of two hydrogen atoms and one atom of oxygen. Water molecule is polarized to some extent due to the high electronegativity of oxygen. Some of the physical properties of water includes:
--> it is colourless, odourless and tasteless liquid.
--> Boiling point of water is 100°C while the melting point is 0°C.
--> It is denser than ice.( Ice floats on top of water).
--> Usually described as a universal solvent due to its ability to dissolve many substances.
1
Metal elements tend to___
electrons and become___
ions
a.) lose, negative
b.) lose, positive
c.) gain, negative
d.) gain, positive
Answer:
d
Explanation:
i did this b4
The atomic radius of phosphorus is greater than the atomic radius of another element with different properties. Which of the following statements about the location of this other element on the periodic table can be true? A. the metal is below phosphorus in the same column. b. the metal is above phosphorus in the same column. c. the metal is to the left of phosphorus in the same row. d. the metal is to the right of phosphorus in the same row.
Answer:
The answer is C. "The metal to the left of phospherus in the same row"
Explanation:
It says that phospherus has a higher atomic radius than the other unkown element. But it has different characteristics compared to phospherus. So that means that it would not be able to be in the same row because elements in the same row share the same charectoristics. And since we want its atomic radius to be lower than phospherus, it would have to be to the left of it because reading left to right all atomic numbers, mass, and radius gets higher
Please let me know if my reasoning was correct!! :)
A diagram used to show inheritance patterns and to predict the genotypes of offspring
Answer:
A Punnett square
When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Which substance represents the precipitate? silver nitrate silver chloride sodium chloride sodium nitrate
Answer:
silver chloride I think i'm not totally sure
Explanation:
The substance which represents the precipitate is silver chloride, AgCl.
Data obtained from the question
•Silver nitrate (l)
•Sodium chloride (l)
•Silver chloride (s)
•Sodium nitrate (l)
Definition of precipitateA precipitate is a substance obtained from a reaction that is insoluble.
How to write the equation•Silver nitrate (l) => AgNO₃ (l)
•Sodium chloride (l) => NaCl (l)
•Silver chloride (s) => AgCl (s)
•Sodium nitrate (l) => NaNO₃ (l)
AgNO₃(l) + NaCl (l) —> AgCl(s) + NaNO₃(l)
From the balanced equation above, we can see that AgCl is in solid form.
Thus, the precipitate from the reaction is Silver chloride, AgCl.
Learn more about precipitate:
https://brainly.com/question/24161600
4) After three half-lives of an isotope, 1 billion (one-eighth) of the original isotope's atoms still remain in a certain amount of this element. How many atoms of the daughter product would you expect to be present?
Answer:
7 * 10^9 atoms
Explanation:
We must first find the number of atoms originally present. We can do this by considering the information given in the question that one-eight of the original isotope is left and that is about one billion atoms of the original material left. Let the number of atoms originally present be x.
So;
1/8x = 1 * 10^9
x = 8/1 * 1 * 10^9
x = 8 * 10^9 atoms of radioactive material.
Number of atoms of daughter nucleus present=
x- 1/8x = 7/8x
but x = 8 * 10^9 atoms of radioactive material
Therefore;
7/8 * 8 * 10^9 atoms = 7 * 10^9 atoms
Help, please X﹏X
- The picture in the right is after the water drained out -
Answer:
a or c
Explanation:
Can I have the brainliest pls?
Can you do my project please and I'll mark brainllest
Answer:
Whats the project?
Explanation:
The speed of light is 1.86 x 105 miles per second how many meters will light travel in 1.0 second
The distance traveled by light : 1.86 x 10⁵ miles
Explanation:
Given
speed of light=v=1.86 x 10⁵ miles/s
time=1 s
Required
distance of light travel
Solution
The motion of light can be considered as motion that has a constant velocity so that it can be classified as a straight, regular motion that has no acceleration
Can be formulated
[tex]\tt \boxed{\bold{d=v\times t}}}[/tex]
For the distance traveled by light in the above problem becomes:
[tex]\tt d=1.86\times 10^5~miles/s\times 1~s\\\\d=\boxed{\bold{1.86\times 10^5~miles}}}[/tex]
A student mixed 75.0 mL of water containing 0.75 mol HCl at 25°C with 75.0 mL of water containing
0.75 mol of NaOH at 25°C in a foam cup calorimeter. The temperature of the resulting solution
increased to 35°C. How much heat in kilojoules was released by this reaction?
bro anyone who answers dis is a god
Answer:
q= 6300J
Explanation:
q=(150.0g)(4.184 j/8 c)(10.c)
Theres a circle before the c's
PLZ HELP THIS IS ERGENT Which beaker has the least amount of thermal energy?
Answer:
I believe the answer is
[tex]C. \: Beaker \: A[/tex]
Explanation:
I hope my answer is correct!
Hope this helps!
(:
Can you please help me I need help
Thank you to the person that helped
Answer:
Model
Theory
Ellipse
Explanation:
Stan One Direction for better grade
Rubidium is a soft, ductile, silver alkali metal. Bromine is a red-brown, liquid nonmetal. What is true of the compound made of both of these elements, Rubidium bromide.
Answer:
Rubidium bromide characteristics -
Explanation:
Rubidium bromide crucial characteristics are as undermentioned
Highly Pure aqueous, in submicron & nanopowder form. Crystalform & growth, soluble in water
What is the basic unit of chemistry?
The basic unit of chemistry is atom.
Matter is all what is present around. Atoms and compounds are all made of very small parts of matter. Matter is defined as anything that has mass and takes up space (it has volume).
Atoms are the smallest unit of matter. It has a tiny atomic nucleus, which is in the center of the atom and contains positively charged particles called protons and neutral, uncharged, particles called neutrons. On the outer side of the atom is a “cloud” of electrons which are negatively charged particles that orbit around the nucleus.
Learn more about Atoms, here:
https://brainly.com/question/1566330
#SPJ1
A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separate different parts of gravel into pure substances. This is because gravel is a(n)
compound
element
homogeneous mixture
heterogeneous mixture
answer:
heterogenous mixture
Explanation:
Gravels can be broken down into different kinds of substances by physical processes because they are heterogeneous mixtures.
Gravels are generally made from different rock fragments including sandstone, limestone, and basalt. The rock fragments can be sorted out by physical means.
In other words, gravels are mixtures of different rocks but the individual rocks still maintain their identities in the mixture. Such mixtures are known as heterogeneous mixtures.
More on heterogeneous mixtures can be found here: https://brainly.com/question/24898889
If the point of the nail can be approximated as a circle with
radius 2.00 10 m, what is the pressure in megapascals
(MPa) exerted on the wall if a hammer strikes the nail with a
force of 104 N? Use 3.14 for Pi
Answer:
P = 795.77 Mpa
Explanation:
Given that,
Force exerted by the hammer, F = 10⁴ N
The nail can be considered as a circle with radius of [tex]2\times 10^{-3}\ m[/tex]
We need to find the pressure exerted on the wall. Pressure is equal to force acting per unit area. So
[tex]P=\dfrac{F}{A}\\\\P=\dfrac{10^4\ N}{\pi \times (2\times 10^{-3})^2}\\\\P=795774715.45\ Pa[/tex]
We know that, 1 MPa = 1000000 Pa
So, P = 795.77 Mpa
So, the pressure exerted on the wall is 795.77 Mpa.
Pls help ASAP I DONT have time IT ALSO DETECTS IF ITS RIGHT OR WRONGG
Answer:
Answer for Microhabitat
Explanation:
A micro habitat is a small area which differs somehow from the surrounding habit. It’s unique conditions are sometimes the home to very unique species that aren’t usually find in a larger region or area.
*
How did the people irrthe video improve on their first try at a solution?"
How do u study for a subject that you didn’t understand from the beginning of the year !!! (The subject is chem btw )
Answer: I would usually try my BEST to get help from yt videos. I recommend using yt that give the most kindergarten type speaking technique, this is really weird to say but it helps just incase you can be stressed out about the words being given by teachers in Chemistry. And I recommend writing down the notes when they explain as well. Hope this helps!
How Non-Polar Molecule disolves in Non-Polar Molecule?
=)
Explanation:
Nonpolar compounds do not dissolve in water. The attractive forces that operate between the particles in a nonpolar compound are weak dispersion forces. However, the nonpolar molecules are more attracted to themselves than they are to the polar water molecules.
Which is an example of cohesion?
A. water sticking to glass
B. water sticking to water
C. hydrogen sticking to oxygen
D. oil sticking to plastic
C₆H₁₂O₆ + 6O₂→6CO₂ + 6H₂O + Energy
Answer:
C₆H₁₂O₆ + 6O₂→6CO₂ + 6H₂O + Energy=chemical equation for cellular respiration
Explanation:
hope this help
this is james not jade
Which two regions have the warmest sea surface temperatures according to the map?
Answer:
2 and 3/ a and b
Explanation:
i think, hopefully it helps.
Answer:
2 and 3
Explanation:
which state of matter takes both the shape and volume of the container.
Answer:
liquid
Explanation:
There are three states of matter and these are the following:
1. Solid
2. Liquid
3. Gas
"Liquid" has particles that show movements in-between to that of the solid and liquid. The forces between these particles are weaker when compared to the forces of particles in solid. This allows it to take the shape and volume of the container without actually changing its volume. If you pour a liquid unto a heart-shape container, it will take the shape of the heart as its form (it has no fix shape).
PLS HURRY!! Charlie is balancing an equation. She has identified the atoms and counted the number of each in the reactants and products. What would Charlie adjust to make the number of atoms in the reactants the same as the number of atoms in the products?
FeCl3 + NH4OH Fe(OH)3 + NH4Cl
CH4 + O2 CO2 + H2O
Fe + H2SO4 Fe2(SO4)3 + H2
PCl5 + H2O HCl + H3PO4
Answer:
Coefficients
Explanation:
Balancing a chemical equation entails making sure that the number of atoms on the reactant side equates that on the products side. According to this question, Charlie is trying to balance an equation. She has identified and counted the number of each atoms in the reactants and products side.
However, to ensure that the identified atoms are equal on both sides of the equation, Charlie needs to adjust the COEFFICIENTS of necessary molecules/atoms. Coefficients are numbers used to multiply an algebraic term. For example, 2CO2 means coefficient 2 will be used to multiply each atom in the carbon dioxide molecule. Based on this explanation, the balanced forms of the equations in the question are:
1. FeCl3 + 3NH4OH → Fe(OH)3 + 3NH4Cl
2. CH4 + 2O2 → CO2 + 2H2O
3. 2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2
4. PCl5 + 4H2O → 5HCl + H3PO4
